/* * Copyright (C)2003-2006 Helsinki University of Technology * Copyright (C)2003-2006 USAGI/WIDE Project * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . */ /* * Authors: * Noriaki TAKAMIYA @USAGI * Masahide NAKAMURA @USAGI * YOSHIFUJI Hideaki @USAGI */ #ifndef _NET_MIP6_H #define _NET_MIP6_H #include #include /* * Mobility Header */ struct ip6_mh { __u8 ip6mh_proto; __u8 ip6mh_hdrlen; __u8 ip6mh_type; __u8 ip6mh_reserved; __u16 ip6mh_cksum; /* Followed by type specific messages */ __u8 data[0]; } __packed; #define IP6_MH_TYPE_BRR 0 /* Binding Refresh Request */ #define IP6_MH_TYPE_HOTI 1 /* HOTI Message */ #define IP6_MH_TYPE_COTI 2 /* COTI Message */ #define IP6_MH_TYPE_HOT 3 /* HOT Message */ #define IP6_MH_TYPE_COT 4 /* COT Message */ #define IP6_MH_TYPE_BU 5 /* Binding Update */ #define IP6_MH_TYPE_BACK 6 /* Binding ACK */ #define IP6_MH_TYPE_BERROR 7 /* Binding Error */ #define IP6_MH_TYPE_MAX IP6_MH_TYPE_BERROR #endif -remove'>summaryrefslogtreecommitdiff
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authorAmir Vadai <amir@vadai.me>2017-02-07 09:56:07 +0200
committerDavid S. Miller <davem@davemloft.net>2017-02-10 13:18:33 -0500
commit71d0ed7079dffbc5cd0941d77d9b84e04109c9bb (patch)
tree21d4b1b2384315a0824e30a40c6dac91064b4023 /include
parentea6da4fd388a1eeab30d64da3eab3c5338714c74 (diff)
net/act_pedit: Support using offset relative to the conventional network headers
Extend pedit to enable the user setting offset relative to network headers. This change would enable to work with more complex header schemes (vs the simple IPv4 case) where setting a fixed offset relative to the network header is not enough. After this patch, the action has information about the exact header type and field inside this header. This information could be used later on for hardware offloading of pedit. Backward compatibility was being kept: 1. Old kernel <-> new userspace 2. New kernel <-> old userspace 3. add rule using new userspace <-> dump using old userspace 4. add rule using old userspace <-> dump using new userspace When using the extended api, new netlink attributes are being used. This way, operation will fail in (1) and (3) - and no malformed rule be added or dumped. Of course, new user space that doesn't need the new functionality can use the old netlink attributes and operation will succeed. Since action can support both api's, (2) should work, and it is easy to write the new user space to have (4) work. The action is having a strict check that only header types and commands it can handle are accepted. This way future additions will be much easier. Usage example: $ tc filter add dev enp0s9 protocol ip parent ffff: \ flower \ ip_proto tcp \ dst_port 80 \ action pedit munge tcp dport set 8080 pipe \ action mirred egress redirect dev veth0 Will forward tcp port whose original dest port is 80, while modifying the destination port to 8080. Signed-off-by: Amir Vadai <amir@vadai.me> Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/tc_act/tc_pedit.h5
-rw-r--r--include/uapi/linux/tc_act/tc_pedit.h23
2 files changed, 28 insertions, 0 deletions
diff --git a/include/net/tc_act/tc_pedit.h b/include/net/tc_act/tc_pedit.h